Hoisting device.



L. v. L L. '1.v STONE.

HQISTING DEVICE. l APPLICATION FILED APLI.' 30, 1914.

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LESTER v. STONE AND LLOYD I. STO, 9F AUGUSTA, GEORGIA.

HQISTING DEVICE. i

e cation of Letters Patent. l'

Fatent/ed Apr. 6,1915.

Appmanon mea apri: w, 191e. serial no. 835,397. v

LLOYD J. STONE, citizens of the United' States, residing at Augusta, in the county of Richmond and State of Georgia, have invented certain new and useful Improvements in Hoisting Devices, of which the following is a specification. p e

The present invention relates-to improvements in hoisting devices, and particularly to the type of portable hoists.

The primary object of the invention is the provision of a hoisting device or hoist which is especially adapted for use in Ware-houses Where baled cotton is to be stored in piles, in loading and unloading wagons, and in places where the space for operating such an apparatus is limited. While the device is of course applicable for use in connection with commodities other than baled cotton, and in places other than cotton ware-houses, it will be understood however that both time and labor are saved in cotton ware-houses where my device is used. Where the bales of cotton are to be stacked or piled from four to seven bales high with the stacks or piles extending over the entire area of the warehouse floor, it is necessary that a portable, and adjustably extensible hoisting apparatus be provided, and the device of the present invention is designed to ll this requirement.

The invention consists in certain novel combinations and arrangements of parts whereby the portable and adjustably extensible hoist is constructed and' operated as will be clearly pointed out hereinafter and more particularly set forth in the. appended claims.

In the accompanying drawings one complete example of the physical embodiment of the invention is illustrated as constructed according to .the best mode so far devised for the practical application of the principles of the invention, but it will of course be understood that changes and alterations may be made in the apparatus within the scope of the following claims .without departing from the spirit of the invention.

Figure 1 is a perspective view of the device complete, built accordin to this invention. Fig. 2 is an enlarge vertical sectional view of the device, with some parts omitted forl convenience of illustration. Fig. 3 is a detail transverse sectional view 0n line 3 3 of Fig. 2.

In the preferred embodiment of the invention as illustrated in the drawin s 'a wooden latform or base 1 is employed rom which t e apparatus is supported. This base is provided with shoes or bars 2, 2, from which the sharpened steel spikes 3, 3, project under the base and these spikes are designed to enter the door of the warehouse and form an anchorage for the hoist and hold it stable and steady while the device is in use.

Upon the base or platform 1 a tubular standard or hollou1 post 4, preferably of cast metal, 1s 'xed, and this standard is designed to guide and support the vertically adjustable and rotary movable crane which comprises a straight vertically arranged post 5 formed with anarch or bend 6 at its top and composed of plping or tubing to provide strength and lightness, and also for the accommodation of the hoisting rope 7 which passes therethrough. Across the arc of the arch 6 a brace bar or bars 8 are arranged, their ends being fixed to the tubing of the arch and post, and apulley 8, and 9 at the respective ends of the bars are provided to guide and'support the hoisting rope 7 which passes up through the post and over the pulleys 8 and 9., and has attached at its free end the bale hooks and chains 10 as usual.

The crane is vertically movable and adjustable, in order to adapt it for use in varying heights of pilesvor stacks of bales, so that as the height of the stack increases the altitude of the crane may be increased. For-this purpose a raising or lifting device is associated with the tubular standard andthe hollow crane, including a rigid'supporting tube or pipe 11 fixed to the platform and also rigidly attached to the tubular standard by metallic straps or bands 12, 13 which extend around the standard and tube and rigidly brace the parts together.

In the upper strap or band 13 a rack Wheel 14 is journaled on its shaft 15, and in Fig. 2 it Will clearly be seen that the wheel is located between the standard andtube and is in mesh with the teeth of a'rack bar 16 which is shown as emerging from the tube 11. This rack bar is adapted to move verti-y cally within the tube 11, and at its upper end is attached rigidly to the angle bracket 17 which is fashioned with a sleeve 18 that is slidable on the post'5 of the crane.A At" the upper and lower sides or top and bottom of this sleeve a pair of adjustable collars 19 and 20 are located, each of which and dispatch. The shaft 15 and Wheel 14- are turned through the medium of- `a pair of sprocket wheels 22 and 23, the former on the shaft 15 and the latter on a shaft or post 24 in the band 12. A sprocket chaincon-- nects these wheels, designated by the number 25, and a crank handle 26 may be utilized toturn the tivo wheels and chain, Aand through them the rack Wheel to lift or permit the lowering of the rack bar.A Any suitable locking devices may be provided to hold the parts when desired. At the junction of the arch with the post of the crane,

a Wheel 27 is journaled in the bracketl 28 fixed to the crane, for a purpose to be de- Warehouse, it is highly desirable and essential that the device beportable andeasily carried about from one point of operation to another. its function completely, as the hoist may be In 'addition to the vertical adjustment of the crane, it is also capable of rotary mol tion and to attain this motion an adjustable ring 2S is utilized. rl`his ring is slidable on the post of the crane and may be secured at a. predetermined point by. means of the set screw or bolt 29. Thus in Fig. 2 the ring has been fixed to support the crane at its minimum height, and the ring is resting on'a supporting head 30 at the upper end of the tubular standard. To facilitate the free movement of the crane in revolving or rotating, a, pair of ba'll bearings are provided, an upper bearing being indicated at 31 as carried by the tubular standard, and a lower bearing 32 being fixed at the lower end of the crane post, and in this manner 'the crane may swing throughout a complete circle, it being understood that the post turns freely in the sleeve 18 before described. i

The raising and lowering of the load of the crane may be accomplished by either an electric motor' 33 or a manually operated crank 34, as desired. In Fig. 1 the crank 34 is represented as tied by a chain 35 and manual labor in lifting is dispensed With,

' While the motor is used, but When the crank is used the shaft 36 is revolved by means of the two gears 37 and 38, as will be readily understood.

The shaft is supported between two side plates 39 preferably of metal that are fixed to a Wooden frame 40 supported on the platform 1, and it will be noted that the motor is also supported on the frame. The shaft 36 supports the Winding drum 41 and it is revolved from the motor through the medium of the belt 42 and drive Wheel 43 as will be evident from an inspection of Fig. 2, a friction Wheel 44 and lever 45 being emploved in connection with the belt to regulate the tractive power of the belt on the Wheel.

The cord or cable 7 passes from the drum to the tubular standard and post and is guided by means ofa ulley 46 journaled in the side plates 39 ofp the frame 40, and in raising or lowering the bale of cotton 47 any-suitable reversing or holding devices ning of the rope or cable When desired.

The hoisting device is braced and supported by mean's of the stay bars or rods 48 which have pointed ends to engage the floor and are loosely attached tothe head 30'of the tubular standard, .andin addition to may be employed to permit the free runthese bars, a second pair of connecting bars 49gV are used to connect the/standard With the frame40, so that the entire hoisting sov apparatus is Well and evenly braced against -v strains.

To insure the 4successful accomplishment of Work with a hoisting-device 1n a cotton ln this respect the hoist fulfils moved about on its Wheels 50 by means of the barrow-handles 51 which are fixed to the frame `40. When it is desired to trans-l fer the hoist from one location to anothery the Wheels 50 are turned down to contact -vvith the floor, and then the hoist is moved nection With the Wheels 50 to support thev entire device. These Wheels 50 are each stl journaled at 52 in an angle bracket 53 which i is rigid at the ends of the cross or rock bar 54 revoluble in the ears or bearing lugs 55 fixed at the front of the platform 1. A crank shaft 56 movable in its bearings 57 is located parallel with the rock bar and this crank shaft is connected to the angle brackets by means of a pair of draw links 58, While a connecting link 59 pivoted on the crank shaft connects it With aj pivoted actuating lever 60 pivoted at 61 on the platform. By means of a Wire loop 62 the lever may be locked in position. rihus When it is desired to bring the Wheels 50 in conizoA the two Wheels when it is lifted by the barj rovv handles. `When it is desired to support the device on three Wheels for transportation, the crane is revolved or swung around to the left in Fig. 1 so that the Wheel 27 is in line with the Wheels 50, and after iat these latter wheels are turned down the` hoist maybe tipped or tilted over to the right in l? 1g. 1 to rest on 'the three Wheels.

In actualpractice it has been,found that ard of a crane-having a post telescoping therewith, a rack bar having a sleeve slidable on said post, adjustable collars for fixing said sleeve, and an adjustable supporting ring on the post for the purpose de-` scribed.

2. The combination with a tubular standard of a crane having a post telescoping therewith, a rack bar and a tubular guiding member therefor, a rack Wheel engaging the bar and actuating means therefor, a fixed sleeve Von the bar slidably connected with the post, adjustable collars for fixing the sleeve on the post, and an adjustable supporting ring on the post for the purpose described. L

3. In a hoist thel combination of a 'platform, a tubular standard mounted thereon,

a crane having its vertical portion fitting' and adjustable in said standard, a hoisting,

rope guided in said crane,"'a bale hook 'secured to one end of said ro e', a drum for winding said rope, a vertica tube mounted on the platform, a band connecting the tu- -bular standard and vertical tube,a pinion mounted in said rin a rack bar connected to said crane and. tting in the tube and meshing with said pimon, and sprocket wheels and chain for revolving said pinion toraise and lower said rack.

4. In a hoist, the combination of a platform, a tubular standard thereon, a tubular crane, consisting of an arched and vertical portion mounted in saidstandard, a hoisting rope passing through the vertical portion of said crane, guide pulleys for said rope mounted in the bendI of the crane, a chain and bale hooks secured to the free end of said rope, a hoistin 'drum for the rope mounted .on the plat orirn,l a Vertical tube rising from the platform parallel to said tubular standard, a rack rod guided in said tube and connected with the crane, a pair of bands connecting the standard and tube, a pair of shafts mounted in said bands, sprocket wheels on said shafts, a sprocket chain connecting said Wheels, a crank on the lower of said shafts, and a pinion on the upper shaft meshing with the rack bar for raising and lowering the bafr and crane.

In testimony Whereof'we ailix our signatures in presence of two witnesses.

LESTERV. STONE. LLOYD J. STONE.

Witnesses: Jonas C. ScoRBonoUGH, J. L. WHALEY. y 

